TonyParker's questions

I am using Beaglebone Black and I want to assign it a static IP address. I have gone through this tutorial and I know how to assign static IP. But question is, what is meant by these parameters;

iface enp0s25 inet static

address 192.168.0.11
netmask 255.255.255.0
network 192.168.0.0
broadcast 192.168.0.255

address: an IP address at which we will receive IP packets. But what is functionality of netmask, network and broadcast ?

I want to connect my PC to BBB, in which range I can assign an IP to my PC ?

I am copying yocto build linux image to sd-card from Ubuntu 14.04 system. The command is:

$ sudo dd bs=4M if=filename.rpi-sdimg of=/dev/sdX conv=fsync

What does mean here of

conv=fsync

I red from here

Synchronize output data and metadata just before finishing. This forces a physical write of output data and metadata.

But I did not understand by this line. What is mean by synchronization, metadata and what will be the effect if I do not include it in the command.

How is it different from fdatasync which only synchronizes output data.

I want to install GCC and G++ 6.3 version. As MATLAB only support this compiler. On launchpad it is not available.

I could not find any link which could describe way to install. I could install 6.5 from PPA. Can someone explain how to install from source ?

I am using Lenovo P50 Thinkpad with 2 extra monitors in my office. I am using Ubuntu 16.04 with unity display manager. When I go for meeting, I take my laptop along with me. When I come back and replug it. It does not detect extra 2 monitors until I restart it again.

Does someone know how to make detectable ?

Recently, I upgraded to 18.04 from 16.04 on Lenovo Thinkpad P50. When I come home, and wake up laptop from sleep, it connects to wifi connection but internet connectivity is not established. I can ping to router but cannot ping to any website. I restarted network-manager service but it does not wor.

I have checked many threads, but could not find a solution. I want to use Chrome or Chromium on Ubuntu 12.04. I have installed Adobe Flash plugin from the Ubuntu Software Center, but it only works for Firefox, not for Chrome or Chromium web browser.

I have also tried to install by .tar ball. placed .so file in chromium browser installation directory and usr folder in /usr, but all in vain.

Is there any other solution or am I missing something? My Ubuntu Software Center is not able to locate Pepper flash plugin.

When I check the processes while booting using this command:

dmesg > ~/dmesg.txt

it shows delay here:

[   46.534002] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[  895.868866] audit_printk_skb: 126 callbacks suppressed

Is there any solution ?